SKU: 79124082118

HEATER JXI 400K BTU NATURAL GAS - JXI400N

Sale price$1543.19 Regular price$1714.66
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Ships within 48 hours · Estimated delivery Sep 3 - Sep 8

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Description

HEATER JXI 400K BTU NATURAL GAS - JXI400NThe Jandy JXI400N 400,000 BTU Natural Gas Heater delivers professional grade performance that pool contractors trust for efficient, reliable pool and spa heating. With 84% thermal efficiency and Low NOx design exceeding DOE requirements, this heater provides the power and environmental compliance commercial installations demand. Contractor Installation Benefits Designed for professional efficiency, the JXI400N fits on a compact 2' x 2' pad and offers

The Jandy JXI400N 400,000 BTU Natural Gas Heater delivers professional-grade performance that pool contractors trust for efficient, reliable pool and spa heating. With 84% thermal efficiency and Low-NOx design exceeding DOE requirements, this heater provides the power and environmental compliance commercial installations demand.

Contractor Installation Benefits

Designed for professional efficiency, the JXI400N fits on a compact 2' x 2' pad and offers plumbing flexibility for quick replacement of Mastertemp® and Max-E Therm® heaters without costly plumbing modifications. The removable and rotatable top plus flip-up electrical panel reduce service time, while the lightweight 117 lb design simplifies installation logistics for your crew.

Why Pool Contractors Choose MT Pools

MT Pools supports your business success with superior customer service, competitive B2B wholesale pricing, and reliable inventory management. Our daily recurring customer support ensures your projects stay on schedule while our technical expertise helps you specify the right equipment for every application.

Frequently Asked Questions

What pool size is the JXI400N suitable for?

The JXI400N 400K BTU heater is designed for pools up to 300 square feet surface area, with flow rates from 30-100 GPM for optimal performance.

Is the JXI400N compatible with automation systems?

Yes, the JXI400N is automation-ready and fully compatible with AquaLink® systems and iAquaLink® mobile app control for convenient remote operation.

What electrical requirements does this heater have?

The JXI400N comes factory wired for 240V 60Hz but is convertible to 120V 60Hz, drawing less than 5 amps at 120V or 2.5 amps at 240V with GFCI protection required.

Does MT Pools offer technical support for installation?

Yes, MT Pools provides comprehensive technical support and installation guidance to ensure proper setup and optimal performance for pool contractors.

Order Today

Join thousands of pool contractors who rely on MT Pools for premium Jandy equipment. Our team provides expert technical guidance and fast shipping to keep your projects moving forward.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 79124082118

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Fred
Los Angeles, US
★★★★★ 3
No pocket
The shirt is nice. My son is 6' and 220 lbs. It fits him perfectly. This will be baggy on a thin guy. This is perfect for someone who is thick. I am very disappointed it doesn't have a pocket. My son specifically wanted a pocket. The pic shows a pocket! Yes the fine print in the description says no pocket, but isn't that what pics are for so I don't have to read the 1000 word description?
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Reviewed in the United States on December 21, 2023
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Truth be Told...
Draper, US
★★★★★ 5
Sharp
Very sharp
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Reviewed in the United States on December 27, 2025
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Zadok Wright
Lexington, US
★★★★★ 5
Very Nice Dress Shirt Will Buy Again
Size: 16"-16.5" Neck 34"-35" Sleeve, Color: White
I am happy with this purchase, it came in a day and was packaged nicely. The shirt looks exactly as expected, a nice clean white, looks sharp and quality, and feels nice too. It’s got just the right amount of stretch without being too much, fits great, very true to size, and overall love the shirt. My only complaint is it did show up a bit wrinkled, which leads me to believe it’s not exactly wrinkle free the way I had hoped, but it is minimal. Overall, a great value for the price, feels comparable to a lot of my shirts 2 to 3 times the price.
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Reviewed in the United States on April 8, 2026
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MG NH
Chelsea, US
★★★★★ 5
Great dress shirt
Size: 17"-17.5" Neck 34"-35" Sleeve, Color: Blue Frost
Looks and fits great Great construction Very good colors I actually enjoy wearing a dress shirt Stretch fabric makes it very comfortable I highly recommend this shirt and will buy more
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Reviewed in the United States on June 5, 2026
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Katie Yates
West Palm Beach, US
★★★★★ 5
Perfect dress shirt.
Size: 18"-18.5" Neck 34"-35" Sleeve, Color: White
Fabulous fabric! Fit is perfect. Kept its excellent through an outdoor wedding. Super easy care.
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Reviewed in the United States on May 22, 2026

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